| article html file updated | 6 February 2020 11:55 CET | Update | https://www.mdpi.com/1999-4907/5/9/2084 |
| article html file updated | 7 May 2019 08:52 CEST | Update | - |
| article html file updated | 22 March 2019 00:08 CET | Update | - |
| article html file updated | 20 August 2015 17:05 CEST | Update | - |
| article html file updated | 23 September 2014 12:02 CEST | Original file | - |
| article xml file uploaded | 23 September 2014 12:02 CEST | Original file | https://www.mdpi.com/1999-4907/5/9/2084/xml |
| article pdf uploaded. | 2 September 2014 13:40 CEST | Updated version of record | https://www.mdpi.com/1999-4907/5/9/2084/pdf |
| article pdf uploaded. | 1 September 2014 13:53 CEST | Version of Record | https://www.mdpi.com/1999-4907/5/9/2084/pdf-vor |
